How do I begin piecing??

[MichelleLT]

I have a bit of a suspicion that fear of rejection might be what's stopping him, combined with him just having moved, trying to get settled in and get job stuff sorted out and being just plain busy.

Perhaps you could call and offer to help him unpack or have dinner? Especially if you take a day off from him, like yesterday, and keep an eye on him to see if he's feeling R claustrophobic I say try and keep communication open. He may just need some indications of interest from you.